Acacia armillata is a species of flowering plant in the family Fabaceae and is endemic to north Queensland. It is a tree with rough bark at the base of the trunk, narrowly elliptic to lance-shaped phyllodes, pale yellow flowers arranged in head of 20 to 30, and thin, leathery pods up to long.
Acacia armillata is a tree that typically grows to a height of up to and has pendulous branches. It has rough grey bark at the base of the trunk, smooth and more mottled above. Its phyllodes are mostly narrowly elliptic to lance-shaped, straight to slightly curved, mostly long and wide. The phyllodes are thinly leathery, glabrous with a gland from the base. The flowers are borne in one or two spherical heads in axils on peduncles long. The heads are spherical, long with 20 to 30 pale yellow flowers. Flowering occurs from about December to March and the pods are up to long and wide and constricted between the seeds. The seeds are oblong, dark brown, about long and wide.[1] [2] [3]
This species was first formally described in 1987 by Leslie Pedley who gave it the name Racosperma armillatum in the journal Austrobaileya from specimens collected near Mount Janet, about south-west of Lakeland Downs in 1986.[4] In 1990, Pedley transferred to species to Acacia as A. armillata in a later edition of Austrobaileya.[5] [6]
This species of Acacia has a disjunct distribution throughout far north Queensland and is found in three localities separated by great distances from each other on or near the Great Dividing Range on Cape York Peninsula. These are the area around Iron Range Mining, the area around Mount Janet and surrounding the junction of Walsh River and Price Creek where it is usually found as a part of Eucalyptus normantonensis or Eucalyptus cullenii woodland communities.
Acacia armillata is listed as of "least concern" under the Queensland Government Nature Conservation Act 1992.[7]